I heard this sound and found it to sound gull-like. But I've never seen a seagull here. I tried to listen where the sound came from. And had the idea that it came from the tree. There was a bird. I photographed it. The photo can be seen here:
https://observation.org/waarneming/view/167021145.

Suddenly I thought: Black woodpecker! I have often heard a "weird" bird in the center of the village and it was more often black woodpecker. I therefore assumed that it was a black woodpecker. And asked on the waarneming.nl forum what type of sound it was. But no one recognized the sound like a black woodpecker. I would like to know which bird it is. And what kind of sound it is.

It's winter and cold. -20 degrees. Snow. So there are not many birds active.